Former Olympic gold medalist and track and field athlete, Edwin Moses, wrote about Caster saying: "Caster Semenya has taught us that sex isn't always binary and caused us to question the justness of distributing societal benefits according to "male" and "female" classifications."

About her efforts in making strides in sports eligibility, he says: "But however it is addressed, Semenya will have already made a singular historical contribution to our understanding of biological sex."

Other famous South African faces on the list include Cyril Ramaphosa and Trevor Noah, who appeared on last year's list, wrote a piece about his colleague Hasan Minhaj.

Cape Town - Time magazine has released it's 16th annual 100 Most Influential People for 2019 and it's a doozy. The list is divided into five categories, namely: Pioneers, Artists, Leaders, Icons and Titans. Embedded in each category are the world's greatest leadership communities - spanning government, business, entertainment, health, sports and science.